Search for tag: "beginning"

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06:18 Lesson 30.8 Quicksort Performance Lesson 30.8 Quicksort Performance	Lesson 30.8 Quicksort Performance It looks like quicksort has solved our performance problems. However, we should not be so hasty. In this video, we look at the real performance for quicksort, and why it is not perfect. We also talk… quicksort pivot algorithm partition sort problem merge mergesort lot element beginning insertion ways things algorithms java sorting randomness deal reason From Hannah Lee on December 10th, 2020 8 plays Content Categories Instructional Recordings Creation Date December 11th, 2020 Creator 1 First Name Walker Creator 1 Last Name White Creator 1 Role Faculty or Staff Member Creator 1 NetID wmw2 Language English Searchable Yes Searchable On Cornell Web Search
10:03 Lesson 30.6 The Partition algorithm Lesson 30.6 The Partition algorithm	Lesson 30.6 The Partition algorithm In the previous video, we saw that nested loops are causing our sorting algorithms to be slow. To speed things up, we need to get rid of one of these loops. To do that, we will need a special… pivot mark question region end position algorithm thing partition picture left beginning head things idea x. loop function reason k. From Hannah Lee on December 10th, 2020 8 plays Content Categories Instructional Recordings Creation Date December 11th, 2020 Creator 1 First Name Walker Creator 1 Last Name White Creator 1 Role Faculty or Staff Member Creator 1 NetID wmw2 Language English Searchable Yes Searchable On Cornell Web Search
06:09 Lesson 30.5 Selection Sort Lesson 30.5 Selection Sort	Lesson 30.5 Selection Sort In the previous video we saw that insertion sort is not an ideal sorting algorithm. In this video we try our hand at another algorithm: selection sort. This is another simple algorithm that may be… region loop algorithm hand selection swap elements swaps loops problem checks module element 7s beginning algorithms sort insertion min alright From Hannah Lee on December 10th, 2020 8 plays Content Categories Instructional Recordings Creation Date December 11th, 2020 Creator 1 First Name Walker Creator 1 Last Name White Creator 1 Role Faculty or Staff Member Creator 1 NetID wmw2 Language English Searchable Yes Searchable On Cornell Web Search
09:43 Lesson 30.1 Searching Lesson 30.1 Searching	Lesson 30.1 Searching In this video, we look at the different ways we can search a list for an element. In doing so, we see that it helps a lot for our lists to be sorted. Hence that will be our focus for the rest of this… middle loop element linear thing end answer elements function position method sequence step half lot answers game deal notice beginning From Hannah Lee on December 10th, 2020 8 plays Content Categories Instructional Recordings Creation Date December 11th, 2020 Creator 1 First Name Walker Creator 1 Last Name White Creator 1 Role Faculty or Staff Member Creator 1 NetID wmw2 Language English Searchable Yes Searchable On Cornell Web Search
07:01 Lesson 25.3 Error Types and the Call Stack Lesson 25.3 Error Types and the Call Stack	Lesson 25.3 Error Types and the Call Stack After the last video, try-except looks less like an if-else statement and more like an if-elif-else statement. As we see in this video, this has profound effects on how errors interact with the call… error call function errors frame assertion functions statements subclass stack feedback recovery arithmetic division arguments beginning points valueerror zerodivisionerror bottom From Hannah Lee on November 12th, 2020 39 plays Content Categories Instructional Recordings Creation Date November 12th, 2020 Creator 1 First Name Walker Creator 1 Last Name White Creator 1 Role Faculty or Staff Member Creator 1 NetID wmw2 Language English Searchable Yes Searchable On Cornell Web Search
08:24 Lesson 13.6 Assert Helpers Lesson 13.6 Assert Helpers	Lesson 13.6 Assert Helpers Sometimes we absolutely need to enforce all of our preconditions, and we cannot live with the compromises of the previous video. In this video we show how to use top-down design to give us more… space function spaces string words precondition preconditions currency helper middle word format statement thing exchange asserts stuff character end beginning From Hannah Lee on October 10th, 2020 15 plays Content Categories Instructional Recordings Creation Date October 10th, 2020 Creator 1 First Name Walker Creator 1 Last Name White Creator 1 Role Faculty or Staff Member Creator 1 NetID wmw2 Language English Searchable Yes Searchable On Cornell Web Search
03:45 Lesson 13.5 Assert Trade-Offs Lesson 13.5 Assert Trade-Offs	Lesson 13.5 Assert Trade-Offs Preconditions can get really complicated, and sometimes it is unclear how to enforce all of the preconditions. In this video we talk about why it is okay to break up a precondition and… precondition statement statements spaces problem space string violation beginning specification end webserver currency developer skill things challenge bit offs trade From Hannah Lee on October 10th, 2020 15 plays Content Categories Instructional Recordings Creation Date October 10th, 2020 Creator 1 First Name Walker Creator 1 Last Name White Creator 1 Role Faculty or Staff Member Creator 1 NetID wmw2 Language English Searchable Yes Searchable On Cornell Web Search
11:59 Lesson 8.3 Test Scripts Lesson 8.3 Test Scripts	Lesson 8.3 Test Scripts A good testing plan has many, many test cases, and it can be really tedious to keep testing a function. That is why it would be ideal if we could automate the process. In this video, we introduce the… test function script module cases spaces tests statement problem print command python rule space thing result beginning input procedure assignment From Hannah Lee on September 24th, 2020 19 plays Content Categories Instructional Recordings Creation Date September 23rd, 2020 Creator 1 First Name Walker Creator 1 Last Name White Creator 1 Role Faculty or Staff Member Creator 1 NetID wmw2 Language English Searchable Yes Searchable On Cornell Web Search
04:15 Lesson 7.2 Specification Format Lesson 7.2 Specification Format	Lesson 7.2 Specification Format Now that you know why specifications are so important, it is time to write them. We have a very specific format that we want for our specifications, which is detailed in this video. function parameter specifications return precondition module returns thing specification beginning docstring fact strings doc beginner programming pep math n. definition From Hannah Lee on September 24th, 2020 14 plays Content Categories Instructional Recordings Creation Date September 2nd, 2020 Creator 1 First Name Walker Creator 1 Last Name White Creator 1 Role Faculty or Staff Member Creator 1 NetID wmw2 Language English Searchable Yes Searchable On Cornell Web Search
07:16 Lesson 6.2 String Slicing Lesson 6.2 String Slicing	Lesson 6.2 String Slicing Strings have a fundamental property that is not present in the other types so far. You can cut up a string into smaller bits or substrings. This is know as string slicing, and it is the focus of the… string box colon position boxes character quotation slicing end python characters space variables error indices mark backslash a. beginning tricks From Hannah Lee on September 16th, 2020 20 plays Content Categories Instructional Recordings Creation Date September 16th, 2020 Creator 1 First Name Walker Creator 1 Last Name White Creator 1 Role Faculty or Staff Member Creator 1 NetID wmw2 Language English Searchable Yes Searchable On Cornell Web Search
12:01 Lesson 6.1 Advanced String Expressions Lesson 6.1 Advanced String Expressions	Lesson 6.1 Advanced String Expressions We have seen that we create a string by writing it between two quotes. However, the quotes are never part of the string. What if we want the quotes to be part of the string? In this video we tackle… string quotation backslash marks mark characters python end thing length escape error quotations variable examples t. character things beginning stop From Hannah Lee on September 16th, 2020 38 plays Content Categories Instructional Recordings Creation Date September 16th, 2020 Creator 1 First Name Walker Creator 1 Last Name White Creator 1 Role Faculty or Staff Member Creator 1 NetID wmw2 Language English Searchable Yes Searchable On Cornell Web Search